Carnelian

Carnelian is a reddish-brown mineral which is commonly used as a semi-precious gemstone. Sard too is similar to Carnelian but is harder and darker. Both these terms are used interchangeably. Carnelian and sard are varieties of the silica mineral chalcedony colored by impurities of iron oxide. The colors can vary from pale orange to intense black.
Carnelian Information
It belongs to chalcedony gem family, and could be opaque to translucent. The hardness on Moh's scale is seven plus which means it is a hard gem. The stone can be found in many shapes but the commonly found shape is oval shape. The stone is mined from USA, Madagascar, Russia, Brazil and Australia among many other countries.
The name has been derived from a Latin word meaning HORN, as it sometimes shows the appearance of flesh. Carnelian was widely used in the Roman era, where it was popularly used for making seal rings and signets for imprinting seals with wax for important documents and correspondences. It was used for this purpose because wax does not stick on carnelian seals.
Anyone wearing the carnelian stone needs to take due care of it. The stone changes color from brown to reddish when placed or contacts with direct sunlight. Hence, the stone should not be placed or exposed to prolong sunlight.
Carnelian Folklore
In the list of birthstones, it resembles the month of August. The stone is mentioned in the ancient astrology of Hebrew, Arabic and Italian. It was believed that the stone brings good luck, good fortune and is connected to religious resources.
The gem is popularly used in Indian and vintage jewelry, as it matches well with other gems and metals. It matches well with citrine and have a great healing impact. It is said that it helps in healing mental and physical tensions and is being used as alternative medicine.
The stone is having some holistic properties, like an ability to change an individual's outlook in life. It also assists in healing the wounds and cleansing of blood. It is also said that it holds power afterlife.
Carnelian is used for targeting your body's system: it motivates your circulatory system, kidneys, hunger, emotions, and sexuality. It grants confidence, assertiveness, and an unstoppable drive to succeed.